Upright SL20 Series Service & Parts Manual

SERVICE & PARTS

Model:______________

Serial n

umber:_____________

__________kg

date:___________

Maxim

um wheel load___________ kg

Maximuu

m allo

wab

le inc

line of mac

hine when elevv

ated:_____deg.

Occupants and equipment m

ust not e

xceed the rated maximumum

load:

_____kg Maxim

um platf

orm occupants:

_____

Maxim

um allo

wab

le sIde f

ce on platf

orm:

_____N

Maxim

um platf

orm height:

______m

Maxim

um platf

orm reach:h:

______m

Maxim

um allo

wab

le wind speed:

______m/s = Beauf

t scale ____

Maxim

um h

ydraulic system pressure:

_____bar

Maxim

um system v

olta

_______V

This mac

hine is man

ufactured to compl

y with

y Directive 89-392/CEE

UTION:

CONSUL

T OPERA

OR'S MANU

AL BEFORE USE.

MANUAL

SL20 Euro

Aerial Work Platforms

Serial Numbers 9300 to Current

When contacting UpRight for service or parts
information, be sure to include the MODEL and
SERIAL NUMBERS from the equipment name­plate. Should the nameplate be missing, the
SERIAL NUMBER is also stamped at the name­plate location.

UpRight, Inc.

1775 Park Street

Selma, California 93662

TEL: [phone]
FAX: [phone]

PARTS: 1-888-UR-PARTS

PARTS FAX: [phone]

PARTS: 1-888-UR-PARTS

PARTS FAX: [phone]

Model:______________
GVW::__________kg
Maxim

um wheel load___________ kg
Maxim
Occupants and equipment m
load:
Maxim
Maxim
Maxim
Maxim
Maxim
Maxim
This mac
Machinery Directive 89-392/CEE

m allo

_____kg Maxim

um allo

um platf

um platf

um allo

um h

ydraulic system pressure:

um system v

hine is man

CACAUTION:

wab

le inc

wab

le sIde f
orm height:
orm reac

wab

le wind speed:

CONSUL

Serial number stamped
beneath nameplate.

Call Toll Free in U.S.A.

1-800-926-LIFT

Serial n

line of mac

um platf

orce on platf

______m

______m

olta

ge:e:_______V

ufactured to compl

T OPERA

hine when ele

ust not e

orm occupants:

______m/s = Beauf

TOR'S MANU

umber:_____________

Mfg. date:___________

ated:_____deg.

xceed the rated maxim

_____

orm:

_____N

ort scale ____

_____bar

y with

AL BEFORE USE.

Upright Ireland, Ltd.

Pottery Road

Dun Laoire,

Ireland
TEL: [phone]
FAX: [phone]

101199-022

01/00 K

ORWARD

F

OW TOUSETHISMANUAL

H

This manual is divided into 6 sections.

S

ECTION

S

ECTION

S

ECTION

S

ECTION

S

ECTION

S

ECTION

PECIAL INFORMATION

S

!

Indicates the hazard or unsafe practice will result in severe injury or death.

DANGER

1

NTRODUCTION

I

General description and machine specifications.

2

ACHINEPREPARATION

M

Information on how to operate the work platform and how to prepare it for operation.

3

AINTENANCE

M

Preventative maintenance and service information.

4

ROUBLESHOOTING

T

Causes and solutions to typical problems.

5

CHEMATICS

S

Schematics and valve block diagram with description and location of components. Large sche­matic drawings may be located in the back of the manual.

6

LLUSTRATEDPARTSBREAKDOWN

I

Complete parts lists with illustrations. Large parts drawings may be located in the back of the
manual.

PECIFICATIONS

&S

&O

PERATION

!

WARNING

Indicates the hazard or unsafe practice could result in severe injury or death.

CAUTION

!

Indicates the hazard or unsafe practice could result in minor injury or property
damage.

NOTE: Gives helpful

information.

Page iSL20

Forward --

ORKSHOPPROCEDURES

W

All information contained in this manual is based on the latest product information available at
the time of printing. We reserve the right to make changes at any time without notice. No part of
this publication may be reproduced, stored in retrieval system, or transmitted, in any form by any
means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written
permission of the publisher. This includes text, figures and tables.

!

CAUTION

Detailed descriptions of standard workshop procedures, safety principles and service
operations are not included. Please note that this manual does contain warnings and
cautions against some specific service methods which could cause personal injury, or
could damage a machine or make it unsafe. Please understand that these warnings
cannot cover all conceivable ways in which service, whether or not recommended by
UpRight, Inc., might be done, or of the possible hazardous consequences of each
conceivable way, nor could UpRight Inc. investigate all such ways. Anyone using service
procedures or tools, whether or not recommended by UpRight Inc., must satisfy
themselves thoroughly that neither personal safety nor machine safety will be
jeopardized.

Page ii

SL20

Section 1

Introduction

Section 2

Operation

ABLE OF

T

1.1Purpose........................................................ 1-1

Scope .....................................................................1-1

1.2GeneralDescription.............................................. 1-1

PurposeAndLimitations ......................................................1-1

2.1SafetyRules.................................................... 2-1

2.2Introduction .................................................... 2-2

2.3Pre-Operation&SafetyInspection................................... 2-2

2.4Operation ...................................................... 2-3

PlatformExtension ...........................................................2-3

TravelWithPlatformLowered .................................................2-3

Steering....................................................................2-4

ElevatingPlatform ...........................................................2-4

LoweringPlatform ...........................................................2-4

EmergencyLowering .........................................................2-4

TravelWithPlatformElevated..................................................2-4

AfterUseEachDay ..........................................................2-5

2.5TransportingWorkPlatform ....................................... 2-5

ByForklift .................................................................2-5

ByTruck...................................................................2-6

2.6Maintenance.................................................... 2-6

BlockingElevatingAssembly ..................................................2-6

BatteryMaintenance..........................................................2-7

2.7PreventativeMaintenance.......................................... 2-8

2.8PreventativeMaintenanceChecklist.................................. 2-9

PreventativeMaintenanceKey..................................................2-9

PreventativeMaintenanceReport ...............................................2-9

2.9Specifications.................................................. 2-10

ONTENTS

C

Section 3

Maintenance

3.1Introduction .................................................... 3-1

Terminology ................................................................3-1

GeneralProcedures...........................................................3-1

3.2DateCodeIdentificationonHoses................................... 3-1

Page iiiSL20 Work Platform

Table of Contents -

3.3SpecialTools.................................................... 3-2

3.4DeutschConnectors...............................................3-2

MaleConnector(Plug)........................................................3-3

FemaleConnector(Receptacle).................................................3-3

ReleasingLockingFingers ....................................................3-3

Crimping ..................................................................3-3

RemovingContactfromHeavyDutyPlug ........................................3-3

3.5BlockingElevatingAssembly.......................................3-4

BraceInstallation ............................................................3-4

BraceRemoval..............................................................3-4

3.6BatteryMaintenance.............................................. 3-4

BatteryInspectionandCleaning ................................................3-4

BatteryCharging ............................................................3-5

3.7SwitchAdjustments ..............................................3-6

Proximity ..................................................................3-6

TiltSensor .................................................................3-6

PQControlHandle...........................................................3-6

3.8MotorControllerandI/OBoardDipSwitchSettings.....................3-7

Controller ..................................................................3-7

I/OBoard ..................................................................3-7

3.9Lubrication ..................................................... 3-8

3.10HydraulicOilTankandFilter......................................3-8

FluidLevel.................................................................3-8

OilandFilterReplacement ....................................................3-8

3.11SettingHydraulicPressures .......................................3-9

MainReliefValve ...........................................................3-9

SteeringReliefValve........................................................3-10

LiftReliefValve ...........................................................3-10

OvercenterValve ...........................................................3-10

3.12 HydraulicManifold............................................3-12

Removal ..................................................................3-12

Disassembly ...............................................................3-12

CleaningandInspection......................................................3-12

Assembly .................................................................3-12

Installation ................................................................3-12

3.13HydraulicPowerUnit...........................................3-14

Removal ..................................................................3-14

Installation ................................................................3-14

3.14HydraulicDriveMotorsandHubs.................................3-14

Removal ..................................................................3-14

Installation ................................................................3-15

3.15WheelBearings................................................3-15

Removal ..................................................................3-15

Installation ................................................................3-15

3.16BrakeCylinder ................................................3-17

Removal ..................................................................3-17

Installation ................................................................3-17

3.17SteeringCylinder...............................................3-18

Removal ..................................................................3-18

Disassembly ...............................................................3-18

CleaningandInspection......................................................3-18

AssemblyandInstallation ....................................................3-19

Installation ................................................................3-19

Page iv

SL20 Work Platform

Section 4

Troubleshooting

Table of Contents -

3.18LiftCylinder ................................................. 3-20

Removal ..................................................................3-20

Disassembly...............................................................3-20

CleaningandInspection......................................................3-20

Reassembly ...............................................................3-20

Installation ................................................................3-20

3.19DepressionMechanismCylinder.................................. 3-22

Removal ..................................................................3-22

Disassembly...............................................................3-22

CleaningandInspection......................................................3-22

Assembly .................................................................3-22

Installation ................................................................3-23

DepressionMechanismSystemAdjustment ......................................3-23

3.20AdjustableCompressionTube.................................... 3-23

3.21ElectricMotor ................................................ 3-24

Troubleshooting ............................................................3-24

Disassembly...............................................................3-24

Inspection................................................................ 3-25

3.22TorqueSpecifications .......................................... 3-26

4.1Introduction.................................................... 4-1

GeneralProcedure ...........................................................4-1

4.2Troubleshooting................................................. 4-2

SpecialTools ...............................................................4-2

AdjustmentProcedures .......................................................4-2

4.3 UprightMotorControllerDiagnostics............................... 4-3

4.4MeasuredVoltageatI/OBoard..................................... 4-4

4.5ElectricalTroubleshooting......................................... 4-5

4.6HydraulicTroubleshooting ........................................ 4-6

Section 5

Schematics

5.1Introduction.................................................... 5-1

Electric-Model .............................................................5-2

HydraulicSchematic .........................................................5-4

Section 6

Illustrated Parts Breakdown

6.1Introduction.................................................... 6-1

SL20 Work Platform

Page v

Table of Contents -ListofFigures

IST OFFIGURES

L

Section 1

Introduction

Figure1-1:SL20WorkPlatform ........................................1-1

Section 2

Operation

Figure2-1:ChassisControls............................................2-2

Figure2-2:EmergencyLoweringKnob ................................... 2-2

Figure2-3:PlatformControls ........................................... 2-3

Figure2-4:PlatformExtension..........................................2-3

Figure2-5:TransportingtheWorkPlatform................................2-5

Figure2-6:BlockingtheElevatingAssembly............................... 2-6

Figure2-7:PowerModule.............................................. 2-7

Section 3

Maintenance

Figure3-1:DeutschConnectorKit ....................................... 3-2

Figure3-2: PlugsandReceptacles,DeutschConnectors...................... 3-2

Figure3-3:LockingFinger,DeutschConnector............................. 3-3

Figure3-4:HeavyDutyDeutschConnector................................3-3

Figure3-5:BlockingTheElevatingAssembly.............................. 3-4

Figure3-6:BatteriesandCharger ........................................3-5

Figure3-7:ProximitySwitch............................................ 3-6

Figure3-8:TiltSensor................................................. 3-6

Figure3-9:PQControlHandle ..........................................3-6

Figure3-10:Controller................................................. 3-7

Figure3-11:I/OBoard.................................................3-7

Figure3-12:HydraulicOilTankandFilter.................................3-8

Figure3-13:HydraulicManifold.........................................3-9

Figure3-14:HydraulicManifold,ExplodedView ..........................3-13

Figure3-15:HydraulicPowerUnit......................................3-14

Figure3-16:HydraulicDriveMotor.....................................3-14

Figure3-17:WheelBearings........................................... 3-15

Figure3-18:BrakeCylinder ........................................... 3-17

Figure3-19:SteeringCylinder..........................................3-18

Figure3-20:SteeringCylinderAssembly.................................3-19

Figure3-21:LiftCylinder InstallationandAssembly .......................3-21

Figure3-22:DepressionMechanismCylinderInstallation....................3-22

Figure3-23:DepressionMechanismAssembly ............................3-22

Figure3-24:CompressionTubeAssembly................................3-23

Figure3-25:ElectricMotorService......................................3-24

Figure4-1:MotorController............................................ 4-3

Figure5-1:HydraulicBlock ............................................ 5-6

Figure5-2:Plugs..................................................... 5-7

Page vi

SL20 Work Platform

IST OFTABLES

L

Section 3

Maintenance

Section 4

Troubleshooting

Table of Contents - List of Tables

Table3-1:Fasteners ................................................................3-26

Table 3-2: Hydraulic Components .....................................................3-26

Table4-1:LEDFaultCodes...........................................................4-3

Table4-2:CircuitBoardConnectors ....................................................4-4

Table4-3:TroubleshootingGuide:ElectricalSchematics ...................................4-5

Table4-4:TroubleshootingGuide:HydraulicSchematic ....................................4-6

SL20 Work Platform

Page vii

Table of Contents -ListofTables

OTES

N

:

Page viii

SL20 Work Platform

Section 1

NTRODUCTION

I

1.1 P

1.2 G

URPOSE

This manual provides illustrations and instructions for the operation and maintenance of the
SL20 Series Work Platforms manufactured by UpRight, Inc. Selma, California.

COPE

S

This manual includes both operation and maintenance responsibilities concerning the SL20
Series Work Platform’s readiness. The Maintenance Section covers scheduled maintenance,
troubleshooting, repair, adjustment and replacement.

ENERALDESCRIPTION

Figure 1-1:

The SL20 Series
Work Platform is a
self-propelled aerial
work platform
designed to be used
as a means of elevat­ing personnel and
equipment and to
provide a mobile
work platform. It is
designed to provide
mobility with the plat­forminaraisedor
lowered position.
Travel with the plat­form elevated is auto­matically limited to
creep speed range.

SL 20 Work

Platform

1. Platform, Guard Rails

2. Elevating Assembly

3. Chassis

4. Control Module

5. Power Module

6. Joystick Controls

6

1

2

5

URPOSEAND

P

IMITATIONS

L

The objective of the
SL20 Series Work
Platforms is to provide a quickly deployable, self-propelled, variable height work platform. The
elevating function shall only be used when the work platform is on a firm level work area. The
work platform is intended to be self-propelled when in relatively close proximity to the work area.

4

3

Page 1-1SL20

Introduction -1.2-GeneralDescription

OTES

N

:

Page 1-2

SL20

Section 2

Electrocution Hazard

This Machine is

not Insulated

PERATION

O

Collision Hazard

Never

position the
platform without checking
for overhead obstructions.

Tip Over Hazard

Never

elevate or drive elevated on

uneven slopes or soft ground or

elevate the platform unless the

platform is level.

Fall Hazard

Never

sit, stand or

climb on guardrail or

midrail.

2.1 S

AFETYRULES

USEOFTHEA

W

ORKPLATFORM

DON

I

A

FTERUSE

I

NSTALLATION

ERIAL

N

EVER

N

EVER

C

LOSE

N

EVER

N

EVER

L

OOK

OT

N

EVER

N

EVER

N

EVER

NSPECT

N

EVER

N

EVER

N

EVER

U

SING

:

This aerial work platform is intended to lift persons and his tools as well as the material used for the
job. It is designed for repair and assembly jobs and assignments at overhead workplaces (ceilings,
cranes, roof structures, buildings etc.). All other uses of the aerial work platform are prohibited.

operate the machine without first surveying the work area for surface hazards such as holes, drop­offs, bumps and debris.

operate the machine if all guardrails are not properly in place and secured with all fasteners properly
torqued. Operating the machine with the door open is prohibited.

door after mounting platform. Dismantling guard rails or door is prohibited.
use ladders or scaffolding on the platform.
attach overhanging loads or increase platform size. Installation of wind force-increasing parts or

altering the machine is prohibited.
up, down and around for overhead obstructions and electrical conductors.
exceed maximum carrying load. Distribute all loads evenly on the platform. See specifications page

for maximum platform load.
operate the machine when wind speeds exceed 45 km/h (28 mph = 12.5 m/sec) beaufort scale 6).
use damaged equipment. (Contact UpRight for instructions.)
modify operating or safety systems. Deactivating safety systems is prohibited.
the machine thoroughly for cracked welds, loose hardware, hydraulic leaks, damaged control cable,

loose wire connections and wheel bolts.
climb down elevating assembly with the platform elevated.
perform service on machine while platform is elevated without blocking elevating assembly.
recharge batteries near sparks or open flame. Batteries that are being charged emit highly explosive

hydrogen gas.
secure the work platform against unauthorized use by turning key switch off and removing key.
the machine as a crane is prohibited.
or use of components or parts that are not provided by UpRight Inc. is prohibited.

Page 2-1SL20

Operation -2.2-Introduction

2.2 I

2.3 PRE-O

NOTE: Carefully read,

understand and follow all safety
rules and operating instructions.
Perform the following steps each
day before use.

NTRODUCTION

PERATION

This manual covers operation of the SL20 Work Platform.

AFETYINSPECTION

&S

(FIGURES 1, 2, AND 3)

1. Open module covers and inspect for damage, oil leaks or missing parts.

2. Check the level of the hydraulic oil with the platform fully lowered. Oil should be visible to full
line on tank. Add hydraulic fluid if necessary.

3. Check that fluid level in the batteries is correct (See Battery Maintenance).

4. Verify that batteries are charged.

5. Check that AC extension cord has been disconnected from charger.

6. Check that all guardrails are in place with fasteners properly tightened.

7. Carefully inspect the entire work platform for damage such as cracked welds or structural
members, loose or missing parts, oil leaks, damaged cables or hoses, loose connections,
or tire damage.

8. Move machine, if necessary, to unobstructed area to allow for full elevation.

9. Pull out chassis emergency stop switch ON.

10. Pull out platform emergency stop switch ON

Figure 2-1:

11. Turn and hold the Chassis Key
Switch to CHASSIS. Push
chassis lift switch to lift position
and fully elevate the platform.

12. Visually inspect the elevating
assembly, lift cylinder, cables
and hoses for damage or
erratic operation. Check for
missing or loose parts.

13. Verify that depression mecha-
nism supports have rotated
into position under each mod­ule.

14. Turn and hold the Chassis Key
Switch to CHASSIS. Partially
lower the platform by pushing
chassis lift switch to LOWER,
and check operation of the
audible lowering alarm.

15. Pull out on the emergency low­ering knob to check for proper operation. Once the platform is fully lowered, release the
knob.

Chassis Controls

Chassis Key

Switch

Emergency Stop

Switch

Lift/Lower Switch

Figure 2-2:

16. Turn the chassis key switch to
PLATFORM.

17. Close and secure module covers.

18. Check that route is clear of obsta­cles (persons, obstructions, holes
and drop-offs), is level, and is
capable of supporting the wheel
loads.

19. Mount the platform and latch the
gate across the entrance.

20. PLATFORM CONTROLS.
the selector switch to drive. While
holding in the interlock switch,
move the handle to FORWARD,
then REVERSE, to check for
speed control.

Page 2-2

Emergency Lowering Knob

Emergency Lowering Knob

Tu r n

SL20

Operation - 2.4 - Operation

21. Push steering switch RIGHT, then LEFT, to check for steering control.

Figure 2-3:

Platform Controls

22. Turn selector switch to LIFT.
Grasp the control handle,
depress the Interlock Switch and
push it forward to check platform
lift controls. Raise the platform
to full elevation.

23. Pull back on the Control Handle.
Platform should descend and
audible lowering alarm should
sound.

24. The machine will descend to a
Loading Clearance Height and
stop. Check around the base of
the platform to insure that no
one is in contact with the
machine.

25. Press the Loading Clearance
Lowering Button to lower plat­form completely.

26. Push the platform emergency
stop switch button to check for
proper operation. All the
machine functions should be
disabled. Pull out to resume.

Steering

Switch

Interlock

Switch

Drive/Lift

Switch

Emergency Stop

Switch

Loading Clearance

Lowering Button

2.4 O

NOTE: Before operating the

work platform, ensure that the
pre-operation and safety
inspection has been completed,
any deficiencies have been
corrected, and the operator has
been thoroughly trained on this
machine.

PERATION

LATFORMEXTENSION

P

Figure 2-4:

Platform Extension

1. Mount the platform and latch the
gate across the entrance.

2. Depress the foot lever at the rear
of the platform extension. Push
the platform extension toward
the front of the machine until the
pin engages the front stop.

3. To retract, depress the lever and
pull the platform extension
toward the rear of the machine
until the pin engages the rear
stop

RAVELWITHPLATFORM

T

OWERED

L

1. Check that route is clear of peo­ple, obstructions, holes and
drop-offs, is level, and is capable
of supporting the wheel loads.

2. Verify that chassis key switch is
turned to PLATFORM and that chassis emergency stop switch is on (pulled out).

SL20

Page 2-3

Operation -2.4-Operation

NOTE: Steering is not self-

centering. Wheels must be
returned to the straight ahead
position by operating the
steering switch.

NOTE: Depression mechanism

supports will deploy
automatically when platform
elevates and will retract when
machine is lowered completely
and driven.

3. After mounting the platform, latch the gate across the entrance.

4. Check clearances above, below, and to the sides of the platform.

5. Pull platform emergency stop button out to the ON position.

6. Position the drive/lift switch to DRIVE.

7. Hold in the interlock switch and move the control handle to FORWARD or REVERSE to
travel in the desired direction. The speed of the machine will depend on the position of the
handle.

TEERING

S

1. Turn rotary selector switch to DRIVE.

2. While holding in the interlock switch, push the steering switch to RIGHTorLEFTtoturn
wheels in the desired direction. Observe the tires while operating the machine to ensure
proper direction.

LEVATINGPLATFORM

E

1. Position rotary selector switch to LIFT.

2. While holding in the interlock switch, push the joystick up.

3. If the machine is not level the tilt alarm will sound and the machine will not lift or drive. If the

tilt alarm sounds the platform must be lowered and the machine moved to a level
location before attempting to re-elevate the platform.

OWERINGPLATFORM

L

1. Position selector switch to LIFT.

2. Grasp the Control Lever so that the Interlock Switch is depressed. Move handle to DOWN
position. A warning alarm will sound while lowering. The machine will to descend to loading
clearance height, then stop.

3. The operator must look around the base of the platform and be sure that no one is in con­tact with the machine.

4. Press the Loading Clearance Release Button on the platform control box. Platform will now
lower completely.

MERGENCYLOWERING

E

(FIGURE 2)

!

WARNING

If the platform should fail to lower, NEVER climb down the elevating assembly.

The emergency lowering valve knob is located at the rear of the chassis.

1. Open the emergency lowering valve by pulling and holding the knob.

2. To close, release the knob. NOTE: The platform will not elevate if the emergency lowering
valve is open.

RAVELWITHPLATFORMELEVATED

T

NOTE: Work platform will travel

at reduced speed when platform
is elevated.

1. Check that route is clear of persons, obstructions, holes and drop-offs, is level, and capable
of supporting the wheel loads.

2. Check clearances above, below and to the sides of platform.

3. Turn selector switch to DRIVE position.

4. Push joystick FORWARD or REVERSE for desired direction of travel.

5. If the machine is not level the tilt alarm will sound and the machine will not lift or drive. If the
tilt alarm sounds the platform must be lowered and the machine moved to a level location
before attempting to re-elevate the platform.

Page 2-4

SL20

This Machine is

not Insulated

This machine is not
insulated. Follow your
national safety stan­dards and maintain
the required safety dis­tance when working
near energized equip­ment.

Operation -2.5-TransportingWorkPlatform

FTERUSEEACHDAY

A

1. Ensure that the platform is fully lowered.

2. Park the machine on level ground, preferably under cover, secure against vandals, children,
and unauthorized operation.

3. Turn the key switch to OFF and remove the key to prevent unauthorized operation.

2.5 T

Figure 2-5:

RANSPORTINGWORKPLATFORM

Transporting the Work Platform

BYF

NOTE: Forklifting is for

transporting only.

!

CAUTION

See specifications for weight of work platform and be certain that forklift is of adequate
capacity to lift work platform.

SL20

ORKLIFT

Forklift from the side by lifting under chassis modules.

Page 2-5

Operation -2.6-Maintenance

BYT

CAUTION

!

Overtightening of chains or straps through tie down lugs may result in damage to work
platform.

2.6 M

!

Never perform service on the work platform in the elevating assembly area while
platform is elevated without first blocking the elevating assembly.

DO NOT stand in elevating assembly area while deploying or storing brace.

AINTENANCE

DANGER

RUCK

1. Lift platform above eight feet, then lower using the control handle. The platform will stop at
the Loading Clearance Height.

2. Maneuver the work platform into transport position. Press the Loading Clearance Height
Release Switch to fully lower the platform, then chock the wheels.

3. Secure the work platform to the transport vehicle with chains or straps of adequate load
capacity attached to the chassis tie down/lifting lugs.

DO NOT block elevating assembly with a load in the platform.

LOCKINGELEVATINGASSEMBLY

B

BRACE INSTALLATION

Figure 2-6:

1. Park the work platform on firm, level ground.

2. Turn and hold Chassis Key Switch to Chassis.
Push chassis lift switch to LIFT and elevate
platform approximately two feet.

3. Place10cm.x10cm.(4in.x4in.) wood block
as shown in illustration.

4. Turn and hold Chassis Key Switch to Chassis.
Push chassis lift switch to LOWER and gradu­ally lower platform until boom is supported by
the wood block.

RACEREMOVAL

B

1. Turn and hold Chassis Key Switch to Chassis.
Push chassis lift switch to LIFT and gradually
raise platform until wood block can be removed.

2. Remove wood block.

3. Turn and hold Chassis Key Switch to Chassis. Push chassis lift switch to LOWER and com­pletely lower platform.

4. Close control module cover.

Blocking the Elevating Assembly

1. Wood Block

Page 2-6

SL20

ATTERYMAINTENANCE

B

!

WARNING

Hazard of explosive gas mixture. Keep sparks, flame, and smoking material away from
battery.

Always wear safety glasses when working with batteries.
Battery fluid is highly corrosive. Thoroughly rinse away any spilled fluid with clean water.
Always replace batteries with UpRight batteries or manufacturer approved replacements

weighing 28 kg. (62 lbs.) each.

• Check battery fluid level daily, especially if work platform is being used in a warm, dry climate.

• If electrolyte level is lower than 10 mm (3/8 in.) above plates, add distilled water ONLY.Donot
use tap water with high mineral content, as it will shorten battery life.

• The battery and cables should be inspected regularly for signs of cracks in the case, electro­lyte leakage and corrosion of the terminals. Inspect cables for worn spots or breaks in the
insulation and for broken cable terminals. Keep terminals and tops of batteries clean.

• Refer to the Service Manual to extend battery life and for complete service instructions.

BATTERY CHARGING

Operation - 2.6 - Maintenance

Figure 2-7:

Charge batteries at end of each work
shift or sooner if batteries have been
discharged.

!

WARNING

Charge batteries in a well ventilated area.
Do not charge batteries when the work platform is in an area containing sparks or

flames.
Permanent damage to batteries will result if batteries are not immediately recharged

after discharging.

Never leave charger operating unattended for more than two days.
Never disconnect cables from batteries when charger is operating.
Keep charger dry.
Never operate machine while batteries are being charged.

1. Check battery fluid level. If electrolyte level is lower than 10 mm (3/8 in.) above plates add
distilled water only.

2. Connect extension cord to charger plug at end of left module. Connect extension cord 1.5
mm² (12 gauge)minimum conductor diameter; 15m (50 ft.) maximum length) to properly
grounded outlet of correct voltage and frequency.

Power Module

Remove to check fluid level

Battery Charger

NOTE: Charger circuit must be

used with a GFI (Ground Fault
Circuit Interrupt) outlet.

NOTE: Do not operate the

machine while the charger is
plugged in.

SL20

3. Charger turns on automatically after a short delay.

Page 2-7

Operation - 2.7 - Preventative Maintenance

2.7 P

!

REVENTATIVEMAINTENANCE

The complete inspection consists of periodic visual and operational checks, together with all nec­essary minor adjustments to assure proper performance. Daily inspection will prevent abnormal
wear and will prolong the life of all systems. The inspection and maintenance schedule is to be
performed at regular intervals. Inspection and maintenance shall be performed by personnel who
are trained and familiar with mechanical and electrical procedures.

WARNING

Before performing preventative maintenance, familiarize yourself with the operation of
the machine.

Always block the elevating assembly whenever it is necessary to enter the scissor
assembly to perform maintenance while the platform is elevated.

The preventative maintenance table has been designed to be used primarily for machine service
and maintenance repair. Please photocopy the following page and use the table as a checklist
when inspecting the machine for service.

Page 2-8

SL20

Operation - 2.8 - Preventative Maintenance Checklist

2.8 P

REVENTATIVEMAINTENANCEKEY

P

REVENTATIVE

AINTENANCECHECKLIST

M

Interval

Daily=each shift or every day
50h/30d=every 50 hours or 30 days
250h/6m=every 250 hours or 6 months
1000h/2y=every 1000 hours or 2 years
Y=Yes/AcceptableN=No/Not Acceptable
R=Repaired/Acceptable

COMPONEN T INSPECTIONOR SERVICES INTERVAL Y N R

Battery

Hydraulic Oil

Hydraulic
System

Emergency
Hydraulic
System

Controller
Control

Cable
Platform

Deck and
Rails

Tires

Hydraulic
Pump

Drive Motors
Torque Hubs

Check electrolyte level 6m
Check specific gravity 6m
Clean exterior 6m
Check battery cable condition Daily
Clean terminals 6m
Check oil level Daily
Change filter 6m
Drain and replace oil 2y
Check for leaks Daily
Check hose connections 30d
Check hoses for exterior wear 30d

Operate the emergency lowering valve and
check for serviceability

Check switch operation Daily
Check the exterior of the cable for

pinching, binding or wear
Check fasteners for proper torque Daily
Check welds for cracks Daily
Check condition of deck Daily
Check for damage Daily
Check lug nuts (torque to 203 Nm [150 ft.

lbs])
Wipe clean 30d
Check for leaks at mating surfaces 30d
Check for hose fitting leaks Daily
Check mounting bolts for proper torque 30d
Check for operation and leaks Daily
Check for leaks Daily
Check oil level 250h/6m
Change Oil after break-in 50h/30d
Change Oil 1000h/2y

Daily

Daily

30d

REVENTATIVEMAINTENANCEREPORT

P

Date: ______________________________________
Owner: _____________________________________
Model No: __________________________________
Serial No:___________________________________
Serviced By: ________________________________
Service Interval:______________________________

COMPONENT INSPECTION ORSERVICES INTERVAL Y N R

Steering Sys­tem

Elevating
Assembly

Chassis

Lift Cylinder

Axle Cylinder

Entire Unit

Labels

Check hardware & fittings for proper
torque

Grease pivot pins 30d
Oil king pins 30d
Check steering cylinder for leaks 30d
Inspect for structural cracks Daily
Check pivot points for wear 30d
Check mounting pin pivot bolts for proper

torque
Check elevating arms for bending 6m
Check hoses for pinch or rubbing points Daily
Check component mounting for proper

torque
Check welds for cracks Daily
Check the cylinder rod for wear 30d
Check mounting pin pivot bolts for proper

torque
Check seals for leaks 30d
Inspect pivot points for wear 30d
Check fittings for proper torque 30d
Check the cylinder rod for wear 30d
Check mounting pin pivot bolts for proper

torque
Check seals for leaks 30d
Inspect pivot points for wear 30d
Check fittings for proper torque 30d
Check for and repair collision damage Daily
Check fasteners for proper torque 3m
Check for corrosion-remove and repaint 6m
Lubricate 30d
Check for peeling, missing, or unreadable

labels & replace

6m

30d

6m

30d

30d

Daily

SL20

Page 2-9

Operation -2.9-Specifications

2.9 S

PECIFICATIONS

Platform Size (Inside toeboards)
Max. Platform Capacity

Standard w/ Extension 340 kg [750 lbs.]
w/o Extension 340 kg [750 lbs.]
on Extension 110 kg [250 lbs.]

Max. No. of occupants

Standard w/ Extension 2 People
w/o Extension 2 People
on Extension 1 person

Height

Working Height 7.92 m [26 ft.]
Max. Platform Height 7.92 m [20 ft.]
Drivable Height 6.10 m [20 ft.] Standard

Dimensions

Weight, Standard 1411 kg [3,100 lbs.]
Overall Width .84 m [33 in.]
Overall Height 2.00 m [79.0 in.]
Overall Length, Standard 2.58 m [101.50 in.]

Surface Speed

Platform Lowered 3.70 km/h [2.3 mph]

Platfor m Ra i s e d

Energy Source

System Voltage
Battery Charger
Battery Duty Cycle
Hydraulic Tank Capacity
Maximum Hydraulic System Pressure
Hydraulic Fluid

Normal: Above 0° C [32° F]) ISO #46
Low Temp: Below 0° C [ 32° F]) ISO #32
Extreme Temp: Below -17° C [0° F]) ISO #15

Lift System
Lift Speed
Control System

Horizontal Drive
Tires
Parking Brakes
Turning Radius (inside)
Maximum Gradeability:
Wheel Base
Guardrails
Toe bo ard

Specifications are subject to change without notice.

ITEM Specification

.70 m x 2.51 m [ 27.75 in. x 99 in. ] Inside Toeboards

1.13 km/h [0.7 mph]
24 Volt Battery Pack (4-220 Amp Hour, 6 Volt Batteries, Min. Wt. 28 kg. [62

lbs. each]),
4 HP DC Electric Motor

24 Volt DC
25 AMP
25% for 8 Hours

15.2 l [4 US Gallons]
251 bar [2750 psi]

Single Lift Cylinder
14 seconds
Proportional Controller, Rotary Selector Switch, and Red Mushroom

Emergency Stop Switch
Dual Front Wheel Hydraulic Motors
381 mm [15 in.] Diameter Solid Rubber, non-marking
Dual - Spring Applied, Hydraulically Released
.64 m [25 in.] Inside
25% [14º]

1.78 m [70 in.]

1.1 m [40 in.] European
152 mm [6 in.]

Hot weather or heavy use may reduce performance.
Meets or exceeds all applicable CE and GS Machinery Directive.

Page 2-10

SL20

Section 3

AINTENANCE

M

3.1 I

T

C

NTRODUCTION

Reference:•

!

WARNING

Be sure to read, understand and follow all information in the Operation Section of this
manual before attempting to operate or perform service on any Work Platform.

This section contains instructions for the maintenance of the Work Platform. Procedures for the
operation inspection, adjustment, scheduled maintenance, and repair/removal are included.

Referring to Section 2 will aid in understanding the operation and function of the various compo­nents and systems of the work platform, and help in diagnosing and repair of the machine.

ERMINOLOGY

T

ERMINALBLOCKS

W

IRECOLOR

ONTACTBLOCKS

Located in upper and lower control boxes. Designated by TB##. (##) designates the number of the
block which is written on the terminal block. “R” right or “L” may follow the number.

Indicated by color/color. First color refers to insulation color and second color indicates stripe. If sec­ond color is not given there is no stripe.

ENERALPROCEDURES

G

Removed by inserting a flat screwdriver into the slot at either end of block and prying outward.
Installed by pressing into an empty slot.

Section 2 for recommended maintenance intervals.

S

WITCHMOUNT

B

T

ERMINALBLOCKS

3.2 D

ATECODEIDENTIFICATION ONHOSES

G

P

ARKER

D

AYCO

Assembled to back of switch actuator. Removed by rotating the small black lever counterclockwise

ASE

and lifting off base.

Remove wires by inserting a small flat bladed screwdriver into square beside wire. Install wires by
stripping ½” of insulation, inserting screwdriver in square and inserting wire. Be sure no strands are
bend backwards. Replace wires with same rating and type.

uses a five digit code: Year,Month,Day.

ATES

i.e.: 6 11 29 - means 1996
uses a ten digit code: Plant, Year, Month, Day.
i.e.: XXXX 6 11 29 - means Plant XXXX, 1996

stamps month, day and year on each hose.

, month 11 (November),day29.

, month 11 (November),day29.

Page 3-1SL20

Maintenance - 3.3 - Special Tools

3.3 S

3.4 D

Figure 3-1:

PECIALTOOLS

EUTSCHCONNECTORS

The following is a list of special tools which may be required to perform certain maintenance pro­cedures on the work platform.

• 0-69 bar (0-1000 psi)(0-69 bar)Hydraulic Pressure Gauge with Adapter Fittings

• 0-207 bar (0-3000 psi)(0-207 bar)Hydraulic Pressure Gauge with Adapter Fittings

• 0-414 bar (0-6000 psi)(0-414 bar)Hydraulic Pressure Gauge with Adapter Fittings

• Small Deutsch Connector Field Kit
(UpRight P/N 030899-000)

• Large Deutsch Connector Field Kit
(UpRight P/N 030898-000)

•Inclinometer

Deutsch connectors are designed so that connector parts, contacts, or electrical cables may be
replaced without replacing the entire connector.

Deutsch Connector Kit

Figure 3-2:

Page 3-2

Plugs and Receptacles, Deutsch Connectors

Small Kit

Large Kit

SL20

Maintenance - 3.4 - Deutsch Connectors

ALECONNECTOR(PLUG

M

1. Disconnect the male connector (plug) from the female connector (receptacle).

2. Using the flat end of the Removal Tool (or flat blade screwdriver), pry the Locking Wedge
from the Male Connector. Care should be taken that the Silicon Gasket is not damaged dur­ing this procedure.

3. Check all parts for damage. Replace all parts which are damaged or worn.

4. Replace or recrimp the wires and contacts. Refer to “Crimping” procedure.

)

EMALECONNECTOR

F

1. Disconnect the male connector (plug) from the female connector (receptacle).

2. Using the notched end of the Removal Tool (or a wire hook), pull the Locking Wedge from
the Female Connector.

3. Check all parts for damage. Replace all parts which are damaged or worn.

4. Replace or recrimp the wires and contacts. Refer to “Crimping” procedure.

ELEASINGLOCKINGFINGERS

R

Figure 3-3:

1. The Locking Fingers can be released

2. Use the removal tool (or flat bladed

3. Pull the wire and contact out of the con-

RIMPING

C

1. Strip 6 mm from the wire.

Locking Finger, Deutsch Connector

following the removal of the Locking
Wedge of either the male or female
connector.

screwdriver) to push the Locking Fin­gers aside. This will release the grip on
the contact.

nector.

ECEPTACLE

(R

)

NOTE: Complete crimping

instructions are included in each
Field Kit.

2. Insert the contact into the crimping tool.

3. Insert the stripped wire into the contact. Copper strands should be visible in the bleed hole of
the contact and no copper strands should be loose (outside) of the contact barrel.

4. Completely close the handles of the crimping tool. Release the handles of the crimping tool
and remove the crimped contact.

5. Inspect the crimped contact to ensure that all strands are secure in the crimp barrel.

EMOVINGCONTACT FROMHEAVYDUTYPLUG

R

Figure 3-4:

1. Slip the removal tool along the wire to
be replaced.

2. Push the removal tool into the connec­tor until the contact is released.

3. Pull the wire and contact out of the plug.

Heavy Duty Deutsch Connector

SL20

Page 3-3

Maintenance - 3.5 - Blocking Elevating Assembly

3.5 B

!

LOCKINGELEVATINGASSEMBLY

WARNING

Never perform service on the work platform in the elevating assembly area while
platform is elevated without first blocking the elevating assembly.

DO NOT stand in elevating assembly area while deploying or storing brace.
DONOTblock elevating assembly with a load in the platform.

DO NOT block elevating assembly with a load in the platform.

Figure 3-5:

RACEINSTALLATION

B

1. Park the work platform on firm,

2. Position chassis lift switch to

3. Place 10 cm x 10 cm (4inchx

4. Push chassis lift switch to

Blocking The Elevating

Assembly

level ground.

LIFT and elevate platform
approximately two feet.

4inch) wood block as shown in
Figure 3-5.

LOWER position and gradually
lower platform until boom is
supported by the wood block.

Wood

Block

RACEREMOVAL

B

1. Push chassis lift switch to LIFT position and gradually raise platform until wood block can be
removed.

2. Remove wood block.

3. Push chassis lift switch to LOWER position and completely lower platform.

4. Close control module cover

3.6 B

!

ATTERYMAINTENANCE

Electrical energy for the motor is supplied by four 6-volt batteries wired in series for 24 volts DC.
Proper care and maintenance of the batteries and motor will ensure maximum performance from
the work platform.

WARNING

Hazard of explosive gas mixture. Keep sparks, flame, and smoking material away from
battery.

Always wear safety glasses when working with batteries.
Battery fluid is highly corrosive. Thoroughly rinse away any spilled fluid with clean water.
Always replace batteries with UpRight batteries or manufacturer approved replacements

weighing 28 kg (62 lbs.) each.

ATTERYINSPECTION ANDCLEANING

B

Check battery fluid level daily, especially if work platform is being used in a warm, dry climate. If
required add distilled water only. Use of tap water with high mineral content will shorten battery
life.

Page 3-4

SL20

Maintenance - 3.6 - Battery Maintenance

!

CAUTION

If battery water level is not maintained, batteries will not fully charge, creating a low
discharge rate which will damage motor/pump unit and void warranty.

Batteries should be inspected periodically for signs of cracks in the cases, electrolyte
leakage and corrosion of the terminals. Inspect cables for worn spots or breaks in the
insulation and for broken cable terminals.

Clean any batteries that show signs of corrosion at the terminals or which electrolyte has
overflowed onto during charging. Use a baking soda solution to clean the batteries, taking
care not to get the solution inside the cells. Rinse thoroughly with clear water. Clean bat­tery and cable contact surfaces to a bright metal finish whenever a cable is removed.

ATTERYCHARGING

B

!

CAUTION

Charge the batteries at the end of each work shift or sooner if the batteries have
been discharged.

Charge batteries in a well ventilated area.
Do not charge batteries when the work platform is in an area containing sparks or

flames.
Permanent damage to batteries will result if batteries are not immediately recharged

after discharging.

Never leave charger operating unattended for more than two days.
Never disconnect cables from batteries when charger is operating.
Keep charger dry.

NOTE: Charger circuit must be

used with a GFI (Ground Fault
Circuit Interrupt) outlet.

NOTE: Do not operate the

machine while it is plugged into
the charger

1. Check battery fluid level. If electrolyte level is lower than 3/8 in. [10mm] above plates
add distilled water only.

2. The plug for the battery charger is located at the right side of the power module.
Connect extension cord (1.5 mm² [12 gauge] conductor minimum and 15 m [50 ft.] in
length maximum) to the charger plug. Connect other end of extension cord to prop­erly grounded outlet of proper voltage and frequency.

3. Charger turns on automatically after a short delay. The ammeter will indicate charg­ing current.

4. Charger turns off automatically when batteries are fully charged.

Figure 3-6:

Batteries and

Charger

Removeto check
battery fluid

Charger Plug

SL20

Page 3-5

Maintenance -3.7-SwitchAdjustments

3.7 S

WITCHADJUSTMENTS

ROXIMITY

P

The proximity switch is located on the left side of
the chassis above the drive wheel. When the
machine is lowered and the tabs are depressed,
high speed drive is available. When the machine
is raised, the tabs deactivate, and the machine
will drive in creep speed.

ADJUSTMENT

1. Adjust proximity switch so machine oper­ates at creep speed when platform is
raised above 1.6 m [6ft.]).]

ILTSENSOR

T

INTRODUCTION

The tilt sensor has three wires; red-power (24 v in),
black-ground, white-output (24 v out). To verify the sen­sor is working properly there is a red LED under the sen­sor that lights up when the sensor is not level.

ADJUSTMENT

1. Place machine on firm level surface ± ¼°.

2. Use the Inclinometer (P/N: 10119-000-00) to
ensure front and rear of chassis is level ± ¼°.

3. Adjust the three leveling screws until the bubble is
centered in the inner circle.

Figure 3-7:

Proximity Switch

Figure 3-8:

Tilt Sensor

Bubble Level

Leveling
Screws

PQ C

ONTROLHANDLE

Figure 3-9:

PQ Control Handle

1. Remove Handle if necessary from Plat­form Control box.

2. Remove and replace defective parts.
Refer to Section 6 for repair parts num­bers.

Lever, Interlock

Boot, Steering Rocker

Rocker Pin

Rocker, Steering

Right Handle Half

Steering Switch (2)

Switch, Interlock

Left Handle Half

Boot, Handle

Hall Effect Device

Page 3-6

SL20

Maintenance - 3.8 - Motor Controller and I/O Board Dip Switch Settings

3.8 M

OTORCONTROLLER AND

NOTE: Before dip switch settings

will take effect, power must be
disconnected or Emergency Stop
switches must be depressed.

OARDDIPSWITCHSETTINGS

Figure 3-10:

Controller

ONTROLLER

C

1 2 3 4 5 6 7 8

I/O B

TM12 off off off on off on off on

MX15/

off on off on off on off on

19
X/20N on off off on off on off on
X20W on off off on off on off on

X26/31 on on off on off off off on

SL20 on off off on off on off on

The above table shows the default dip switch settings on the
controller box when the machine leaves the factory. The fol­lowing adjustments may be made to these settings:

Switches 3 & 4 determine the elevated “creep” speed. If the
machine does not operate at the specified speed at the default settings, use the following table to
adjust the dip switch settings

.

3 4

1(slowest) off off

2onoff

3 (default) off on

4 (fastest) on on

Switches 5 & 6 determine the deceleration time. Switch 5 is for the deceleration rate while the platform
islowered.Switch6isfortheelevatedrate.

Decel 5 6

.24 sec. off off

1.27 sec. on on

I/O B

OARD

Figure 3-11:

1 2 3 4

I/O Board

TM12 off off off off

MX15/19 off off off off

X/20N off off off off

X20W off off off off

X26/31 off off off off

SL20 off off off off

The above table shows the default dip switch settings on the I/O

12 11 10 9

87

1234

56

1234

8765

4321

board when the machine leaves the factory. Switches three and
four work together to determine the optional alarm settings.

1234

1 2 3 4 Result

on Two Speed Mode (not used)

off Proportional Control

on not used

off

DepressionMechanism extends

when platform is raised
off off Down alarm only
on off Down and Reverse alarm
off on Drive and Down alarm
on on All Motion alarm

8765

Part
No.

Serial

No.

4321

1234

8765

12 11 10 9

1234

56

87

SL20

Page 3-7

Maintenance -3.9-Lubrication

3.9 L

3.10 H

!

UBRICATION

The SL20 is designed with maintenance free bearings. Only the wheel bearings require
lubrication. Refer to section 3.14 for wheel bearing maintenance.

YDRAULICOILTANK ANDFILTER

LUIDLEVEL

F

The fluid level is visible through the label on the plastic tank. With platform fully lowered,
oil should level should be at MAX. DO NOT fill above the upper line or when the platform
is elevated.

IL ANDFILTERREPLACEMENT

O

1. Operate the work platform for 10-15 minutes to bring the hydraulic oil up to normal
operating temperature

CAUTION

The hydraulic oil may be of sufficient temperature to cause burns. Wear
safety gloves and safety glasses when handling hot oil

2. Provide a suitable container to catch the drained oil. Hydraulic tank has a 15 L (4
U.S. gal) capacity.

3. Remove the drain plug under the tank and allow all oil to drain.

4. Clean the magnetic drain plug and reinstall.

5. Fill the hydraulic reservoir.

6. Unthread the filter.

7. Apply a thin film of clean hydraulic oil to the gasket of the replacement filter.

8. Thread the replacement filter until the gasket makes contact, then rotate the filter 3/4
of a turn further.

Figure 3-12:

Hydraulic Oil

Tank and F ilt er

Oil level is visible
through label on
plastic tank.

Oil Filter

Page 3-8

SL20